Softer than what? CT didn't even use stat modifiers on most tasks and then they were all over the place. Losing stats was bad, but in an amorphous and hard to quantify way.
Guns had a minimum Dex and a Bonus Dex, which varied between weapon types. So if you used a carbine and didn't have a Dex 5+, you took a -1. But if you used an Automatic Rifle and didn't have a Dex 7+, you took a -2. On the other end a Dex 9+ was +1 with a Carbine, but a Dex 10+ was needed to get a bonus with an Autorifle (bonus being +2).
Pilot rolls were straight pilot skill.
You needed a Dex of 8+ AND Medic 3 to be a licensed surgeon, but the Dex didn't actually modify your Medic rolls for the most part.
And SOC was especially wild because a high SOC might be a bonus in certain circumstances and a penalty in others.
Softer in that Mongoose players get to choose what stats lose a point (until it gets to one point from each). But also the CT rolls were harsher.
Mongoose at Term 4 is a single 2D6-4 roll, with no ageing on a roll of 5+, one lost point on a 4, two on a 3 and three on a 2.
Classic at Term 4 was three 2D6 rolls vs each of STR, Dex and End, losing a point if the throw was not made (8+ for STR and END, 7+ for Dex).
At the end of term 4 a mongoose character has an 83% chance of no loss, 11% chance of losing a point from the stat of their choice, 5.5% chance of losing a point from two stats of their choice, and 2.7% chance of losing a point from all three.
At the end of term 4 a classic character has a 58% chance of losing a point of Str, a separate 58% chance of losing a point of END, and a separate 41% chance losing a point of DEX. The chance of NO stat loss at age 34 in Classic is only 10%. The chance of losing a point from all three was 14%.
So, definitely harsher.
And I take the point that there was no FORMAL characteristic modifier in Classic, but the tasks were meant to take characteristics into account. Such as "DM+1 for STR 9+". Or the very relevant weapon charts. Losing stat points were very much important in Classic.